Method, register and system for group call

摘要

Embodiments of the present invention disclose a group call method, a group call register and a group call system, and provide more capacity for groups in 3GPP based public trunking network. In the embodiments of the present invention, a group call reference is generated according to a group ID. Typically the group ID is taken directly as the group call reference. In other words, the group ID is equal to the group call reference, which means the length of the group ID is equal to the length of the group call reference and the content of the group ID is the same as the content of the group call reference. Therefore the capacity for group IDs can be the same as that for group call references. Both the group ID and the group call reference can have a length of 8 decimal digits. Compared with the prior art that a group ID can have a length of at most 6 decimal digits, the embodiments of the present invention expand capacity for groups in the public trunking network over hundreds of times. A group ID corresponds to only one group call area, which simplifies group call data management in the group call register.